package socket;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.ServerSocket;
import java.net.Socket;
import java.nio.charset.StandardCharsets;

/**
 * 聊天室的服务器
 */
public class Server服务器端2 {
    private ServerSocket serverSocket;

    public Server服务器端2(){
        try {
            System.out.println("正在启动服务端");
            serverSocket = new ServerSocket(8848);
            System.out.println("服务端启动完毕");
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    public void start(){
        try {
            while(true){
                System.out.println("等待客户端链接");
                Socket socket = serverSocket.accept();
                System.out.println("一个客户端链接成功");
                //启动一个线程负责与该客户交互
                ClientHandler handler = new ClientHandler(socket);
                Thread t = new Thread(handler);
                t.start();
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    public static void main(String[] args) {
        Server服务器端2 server = new Server服务器端2();
        server.start();
    }

    private class ClientHandler implements Runnable{
        private Socket socket;
        private String host;//记录该客户端的IP地址

        public ClientHandler(Socket socket) {
            this.socket = socket;
            //通过socket远端计算机的IP地址的字符串格式
            this.host = socket.getInetAddress().getHostAddress();
        }

        public void run(){
            try {
                InputStream in  = socket.getInputStream();//低级流
                InputStreamReader isr = new InputStreamReader(in, StandardCharsets.UTF_8);
                BufferedReader br = new BufferedReader(isr);
                String message;
                while((message=br.readLine())!=null) {
                    System.out.println(host+"说:"+message);
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
}

